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mrs_skeptik [129]
3 years ago
10

The ph of two lakes is measured. Lake a has a ph of 8.0; lake b has a ph of 6.0. Which of thefollowing statements is correct abo

ut these lakes?
Chemistry
1 answer:
Gnom [1K]3 years ago
7 0
Can you complete your question ?
Given the pH you can say that lake A is Basic and lake B is Acidic because of their pH.
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2C_H. + 702 — 400, + 6H2O
astra-53 [7]

Balanced Eqn

2

C

2

H

6

+

7

O

2

=

4

C

O

2

+

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H

2

O

By the Balanced eqn

60g ethane requires 7x32= 224g oxygen

here ethane is in excess.oxygen will be fully consumed

hence

300g oxygen will consume  

60

⋅

300

224

=

80.36

g

ethane

leaving (270-80.36)= 189.64 g ethane.

By the Balanced eqn

60g ethane produces 4x44 g CO2

hence amount of CO2 produced =

4

⋅

44

⋅

80.36

60

=

235.72

g

and its no. of moles will be  

235.72

44

=5.36 where 44 is the molar mass of Carbon dioxide

hope this helps

6 0
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kkurt [141]
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4 0
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Dima020 [189]

Answer:

It is a covalent bond because both carbon and oxygen are nonmetals. The formula will be CO² because the electrons between the atoms are being shared equally.

8 0
2 years ago
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